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Some U.S. states permit only certain sizes of beer kegs. Most sizes, but not all, are fractions of the 31-gallon beer barrel.
© James Brown / iStockphoto.com
The first metal kegs were barrel-shaped and had bungs. The most popular kegs today are cylindrical, made of stainless steel, and have no bungs. They are cleaned and filled through a two-passage valve.
| Capacity | |
|---|---|
| in barrels | in U.S. gallons |
| 1/2 | 15.5 |
| 1/4 | 7.75 |
| 1/6 | 5.16 |
| — | 5 |
| — | 3 |
| — | 2½ |
In addition, the European sizes of 50 liters, 20 liters, and 10 liters are in use.
Jason Parker.
Roll out the barrel: Tips on purchasing and caring for kegs.
Brewing Techniques, May/June 1999.
www.brewingtechniques.com/library/backissues/issue7.3/parker.html
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Last revised: 23 September 2007.